Hi! I've just got my new sony a7s II yesterday. Took it out of the box and realized it had some problem with the SS dial. Rear dial is not working properly. It is stuck between 2 adjacent settings. So no matter which way I move it shuter speed goes 1/160 1/200 1/160 1/200.. I have tried to reset camera settings and I didn't work. Still the same problem. Any advice please? Anyone having the same issue?